Add: Console command

src/console_cmds.cpp

@@ -1129,6 +1129,52 @@ DEF_CONSOLE_CMD(ConNewGame)
 	return true;
 }
 
+DEF_CONSOLE_CMD(ConNewHeightMapGame)
+{
+	if (argc == 0) {
+		IConsolePrint(CC_HELP, "Load a game by name or index. Usage: 'newheightmapgame [<file | number> [seed]]'");
+		IConsolePrint(CC_HELP, "The server can force a new game using 'newheightmapgame'; any client joined will rejoin after the server is done generating the new game.");
+		return true;
+	}
+
+	if (argc > 3) return false;
+
+	bool heightmap_loaded = true;
+	std::string_view file;
+
+	if (argc == 1) {
+		file = _file_to_saveload.title;
+	}
+
+	if (argc >= 2) {
+		file = argv[1];
+	}
+
+	/* ConLoad command actually uses
+	_console_file_list.ValidateFileList()
+	here, but for this procedure build a file list for mere savegames, instead of merely validating */
+	_console_file_list.BuildFileList(FT_HEIGHTMAP, SLO_LOAD);
+	const FiosItem *item = _console_file_list.FindItem(file);
+	if (item != NULL) {
+		if (GetAbstractFileType(item->type) == FT_HEIGHTMAP) {
+			_switch_mode = SM_LOAD_HEIGHTMAP;
+			_file_to_saveload.SetMode(item->type);
+			_file_to_saveload.name = FiosBrowseTo(item);
+			_file_to_saveload.title = item->title;
+
+			StartNewGameWithoutGUI((argc == 3) ? strtoul(argv[2], NULL, 10) : GENERATE_NEW_SEED);
+		} else {
+			IConsolePrint(CC_ERROR, "{}: Not a heightmap.", file);
+		}
+	} else {
+		IConsolePrint(CC_ERROR, "{}: No such file or directory.", file);
+	}
+
+	_console_file_list.InvalidateFileList();
+
+	return heightmap_loaded;
+}
+
 DEF_CONSOLE_CMD(ConRestart)
 {
 	if (argc == 0) {
@@ -2518,6 +2564,7 @@ void IConsoleStdLibRegister()
 	IConsole::CmdRegister("list_cmds",               ConListCommands);
 	IConsole::CmdRegister("list_aliases",            ConListAliases);
 	IConsole::CmdRegister("newgame",                 ConNewGame);
+	IConsole::CmdRegister("newheightmapgame",        ConNewHeightMapGame);
 	IConsole::CmdRegister("restart",                 ConRestart);
 	IConsole::CmdRegister("reload",                  ConReload);
 	IConsole::CmdRegister("getseed",                 ConGetSeed);